v3.25.1
Shareholder Report, Line Graph (Details) - USD ($)
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Feb. 07, 2024
C000247858      
Account Value [Line Items]      
Line Graph and Table Measure Name KraneShares 90% KWEB Defined Outcome January 2027 ETF    
Account Value $ 12,444 $ 10,252 $ 10,000
C000247859      
Account Value [Line Items]      
Line Graph and Table Measure Name KraneShares 100% KWEB Defined Outcome January 2027 ETF    
Account Value $ 11,588 10,084 10,000
MSCI China All Shares Index (Net) (USD)      
Account Value [Line Items]      
Line Graph and Table Measure Name MSCI China All Shares Index (Net) (USD)    
Account Value $ 13,469 10,485 10,000
MSCI China All Shares Index (Net) (USD)      
Account Value [Line Items]      
Line Graph and Table Measure Name MSCI China All Shares Index (Net) (USD)    
Account Value $ 13,469 10,485 10,000
CSI Overseas China Internet Index      
Account Value [Line Items]      
Line Graph and Table Measure Name CSI Overseas China Internet Index    
Account Value $ 14,602 10,728 10,000
CSI Overseas China Internet Index      
Account Value [Line Items]      
Line Graph and Table Measure Name CSI Overseas China Internet Index    
Account Value $ 14,602 $ 10,728 $ 10,000